Yarn dyeing bobbin



Oct. 6, 1936. G, F. [VEY 2,056,859

YARN DYEING BOBBIN Filed April 4, 1955 :SJLBJ @Las is; @ha :El @la Patented Oct. 6, 1936 UNITED STATES PATENT optics Application April 4,

l Claims.

This invention relates to improvements in material holders and particularly cop tubes used in the dyeing of yarns or similar material.

In the dyeing of yarns, for instance, by the so-called Franklin process, the yarn is wound on a cop tube or other suitable carrier and the dyeing liquid, under pressure, is adapted to iiow through the yarn from the interior of the cylindrical body of the yarn, after which, by reversing the action of the liquid pump, the liquid is drawn back through the yarn. In a great many instances, a helical coil of wire has been used as the carrier, the convolutions of the coil being spaced from each other to facilitate passage of the liquid to and through the yarn. In winding the yarn on such a carrier it is general practice to insert a core or bobbin in the helical coil, such core or bobbin being removed from the coil after winding, but before the yarn is placed in the dye receptacle.

Primarily, therefore, the object of the present invention is to provide a bobbin which can be used with convenience and economy in Winding the yarn but which can be readily removed from the carrier per se.

More specically, the invention contemplates a cop tube having a core within the helical Wire coil, said core having means thereon adjacent its ends for limiting axial expansion or elongation of the coil. To permit removal of the core from the coil, the former is made in sections removable independently of each other endwise of the coil but interlocking elements on the core sections, yieldingly held in interlocking engagement, prevent accidental displacement of the core. However, by imposing a twisting action on the core, one section can be tilted or rocked on the other to disengage said interlocking elements, whereupon the core sections can be Withdrawn from the coil.

With these and other objects in view, the invention consists in certain details of construction and combinations and arrangements of parts, all as will be hereinafter more fully described and the novel features thereof particularly pointed out in the appended claims.

In the accompanying drawing:

Figure 1 is an elevational view of the present cop tube or bobbin;

Fig. 2 is a similar view, taken at right angles to Fig. 1;

Fig. 3 is a longitudinal section on the line 3 3 of Fig. 1;

Fig. 4 is a transverse section on the line 4--4 of Fig. 1;

1935, Serial No. 14,719

Fig. 5 is a similar view showing the core sections unlocked; and

Figs. y6 and 7 are detail plan views of the two core sections.

In the preferred embodiment of the invention illustrated in the drawing, the cop tube is formed of a helical coil of wire Iii, as is customary in that the said coil constitutes a cylindrical support for a strip of fabric (not shown) wound thereon and adapted to receive the windings of yarn. The convolutions of the coil are spaced apart a sufficient distance to give the dye liquid ready access to the yarn in the dyeing process, all as is well known in the industry.

To support the coil at times when it is to be revolved, a core is provided and means are also provided for limiting the expansive movement of the ends of the coil and for preventing bodily movement of the coil on the core. Such limiting means are preferably in the form of stops or enlargements I3 at the outer ends of the core sections. However, the core is removed when the cone or cylinder of yarn is to be placed in the dye vat, and, for this reason, said core is formed of two separable sections I I, I2 which overlap each other longitudinally of the bobbin.

The two core sections are detachably secured together to prevent accidental displacement thereof from within the coil. Such locking means is preferably composed of a recess I4 in core section II adapted to receive and form an interlock with a lug or projection I5 on section I2. Said interlocking elements I4, I5, are preferably held in interlocking relation by flat springs I6 secured on the cuter surfaces of the core sections and engaging against the inner surface-of the coiled wire.

When it is desired to remove the core from within the coil I 0, a twisting action is imposed on the two core sections so that one section will be tilted or canted, so to speak, with respect to the other, as shown in Fig. 5, thus removing lug I5 from recess I4, the edges of the sections opposite elements I4, I 5, functioning as though they were hinged together. In other Words, said opposite edges serve as the fulcrum point for the pivotal movement of the core sections.

As illustrated more clearly in Figs. 4 to 7, the two sections I I, I2, constituting the core are each formed with the elongated body portion of substantially semi-circular cross-section and an enlarged end portion. In other words, only two sections are used to form a core that extends the full length of the cop tube. The two sections are releasably locked directly to each other and by disengaging the interlocked elements as previously described and exerting an endwise pull on the two enlarged end portions the entire core is removed, making the cop tube and its contents ready for the dyeing operation.

What I claim is:

1. A cop tube for dyeing comprising a helical coil of wire, a tubular core within said coil formed of sections separable axially of the coil, means for releasably locking said sections together against movement axially of the coil, said locking means being releasable by tilting one core section on the other, and means on said core sections for limiting axial movement of said coil.

2. A cop tube for dyeing comprising a sectional, tubular core, a cylindrical, axially expansible member on said core for supporting material to be dyed, an interlock between said core sections for securing said sections together against movement axially of said member, spring means for yieldingly maintaining said sections interlocked, said interlock being rendered inoperative by canting one core section on the other, and means on said core for limiting axial movement of said spacer member.

3. A cop tube for dyeing comprising a core, a cylindrical axially expansible spacer member,

said core being composed of two sections extend-I ing from opposite ends into said member and overlapping each other within said member, means for holding said core sections against movement axially of said member, and means on each section aty the exterior of said spacer mem ber for limiting axial expansion of said member.

4. A cop tube for dyeing comprising a helical coil of wire, a core for said coil composed of two sections each having an enlargement at one end of the exterior of said coil and an elongated body portion of semi-circular cross section projecting into said coil in longitudinal overlapping relationship, and means for releasably locking said sections together.

5. A cop tube for dyeing comprising a helical coil of wire, a core for said coil composed of two sections each having an elongated body portion of semi-circular cross-section, said semi-circular portions of the two sections overlapping each other within said coil, and means on said overlapping portions for releasably locking said two sections together against separation axially of the coil.

6. A cop tube for dyeing comprising a core, a cylindrical spacer member surrounding said core, said core being composed of two sections each having an enlarged end portion and an elongated body portion, the body portions of said two core sections extending into said spacer member from opposite ends of the latter, and means for directly but releasably locking said two sections to each other against separation axially of the core.

7. A cop tube for dyeing comprising a core, a cylindrical spacer member surrounding said core, said core being composed of two sections projecting into said member from opposite ends of the latter and overlapping each other within said member, and means interposed between said member and said sections for forcing said sections together radially of said member.

GEORGE FRANKS IVEY. 

